🔬 physics

Actively Tunable Sb2S3 Metasurface with Polarization-insensitive Quasi-bound Flat-Band in the Continuum for Enhancing Third-harmonic Generation

本文提出了一种混合 Sb2S3-Si 超表面,该超表面利用极化不敏感的准连续域束缚态和局部平带,实现了在近红外光谱范围内对三倍频产生稳健且动态可调的增强。

Ruhao Pan, Siwen Qian, Yongliang Li, Junhao Tan, Zhenggang Pan, Bo Wang, Jingbo Sun, Chuanbao Liu, Junjie Li, Ji Zhou, Y (…)2026-06-30
🔬 physics

Excitonic nonlinear optical response of conventional and inverted CdSe/ZnS cylindrical core/shell quantum dots under dual-interface dielectric confinement: saturable absorption, photobleaching, and dielectric engineering

本文提出了一个严谨的激子理论框架,该框架结合了库仑相关性、双界面介电自极化、局部场修正以及温度依赖性退相干,旨在证明反转 CdSe/ZnS 圆柱形量子点的核/壳几何结构能显著增强三阶非线性光学响应,从而为氧化物嵌入型光子器件提供优化的设计指南。

Lakhdar Sek2026-06-29